Home / 31,698.90-47,545.60-19,215.25

Finding the Fourth Proportional to 31,698.90, 47,545.60 and 19,215.25

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Solution

The fourth proportional to 31,698.90, 47,545.60 and 19,215.25 is: 28,821.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,698.90 : 47,545.60 = 19,215.25 : x
  2. Step 2: Convert to fraction form
    31,698.90/47,545.60 = 19,215.25/x
  3. Step 3: Cross multiply
    31,698.90x = 47,545.60 × 19,215.25
  4. Step 4: Simplify right side
    31,698.90x = 913,600,590.40
  5. Step 5: Solve for x
    x = 913,600,590.40/31,698.90
  6. Step 6: Final answer
    x = 28,821.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.